science
Grade-9
Easy
Question
An object in a uniform motion ___.
- Speeds up uniformly
- Moves at a constant speed
- Slows down uniformly
- Does not move
Hint:
Moves at a constant speed
The correct answer is: Moves at a constant speed
In uniform motion, the body moves at a constant speed, as it covers equal distance at equal intervals of time.
Related Questions to study
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Peter wants to modify the formula for acceleration
i.e., a = (v – u)/ t
Where v = final velocity, u = initial velocity, t= time, a = acceleration, to suit the special case of freefall of a ball dropped from the top of a building. He chooses to make the following substitutions in the formula.
a. v= 0
b. u= 0
c. a= 9.8 m/s2
Identify the correct substitutions.
Peter wants to modify the formula for acceleration
i.e., a = (v – u)/ t
Where v = final velocity, u = initial velocity, t= time, a = acceleration, to suit the special case of freefall of a ball dropped from the top of a building. He chooses to make the following substitutions in the formula.
a. v= 0
b. u= 0
c. a= 9.8 m/s2
Identify the correct substitutions.
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A car is moving at a speed of 5 m/s in the same direction throughout its motion. Which of the following is true about its motion?
A car is moving at a speed of 5 m/s in the same direction throughout its motion. Which of the following is true about its motion?
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Which of the following value(s) can distance take?
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An object falling from the top of a building reaches a velocity of ___ m/s in 20 s.
An object falling from the top of a building reaches a velocity of ___ m/s in 20 s.
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The driver of a car moving at a velocity of 50 m/s applies brakes and eventually stops after 10 s. What is the acceleration of the car?
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An object is moving in a non-uniform motion. Which of the following physical quantities gives the measure of the rate of motion?
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Which of the following remains constant in a uniform circular motion?
Which of the following remains constant in a uniform circular motion?
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Which of the following is constant during a uniform circular motion?
Which of the following is constant during a uniform circular motion?
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The velocity of a body changes when ___.
The velocity of a body changes when ___.
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A car moves at a speed of 3 m/s. What is its acceleration?
A car moves at a speed of 3 m/s. What is its acceleration?
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In which of the following cases a body is said to be accelerating ?
Negative acceleration is known as deceleration.
In which of the following cases a body is said to be accelerating ?
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Negative acceleration is known as deceleration.
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The distance of an object ___ be zero but/and its displacement ____ be zero.
The distance of an object ___ be zero but/and its displacement ____ be zero.
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